The main uses of sodium hydroxide

papermaking

Sodium hydroxide plays an important role in the paper industry. Due to its alkaline nature, it is used in the process of boiling and bleaching paper pages.

food industry

Sodium hydroxide can be widely used in the following production processes: container cleaning process; The processing of starch; The preparation process of carboxymethyl cellulose; The manufacturing process of monosodium glutamate.

water treatment

Sodium hydroxide is widely used in water treatment. In sewage treatment plants, sodium hydroxide can reduce the hardness of water through neutralization reaction. In the industrial field, it is a rejuvenator for ion exchange resin regeneration. Sodium hydroxide has strong alkalinity and relatively high solubility in water. Due to the liquid state of caustic soda, it is easy to measure the dosage and is conveniently used in various fields of water treatment. Sodium hydroxide is used in water treatment for the following purposes: eliminating water hardness; Adjust the pH value of water; Neutralize wastewater; Regeneration of ion exchange resin; Eliminate heavy metal ions in water through precipitation.

Artificial fibers and textiles

In the textile industry, sodium hydroxide is used for the final treatment and dyeing of fibers. Main application: Mercerization treatment for synthetic fibers

metallurgy

Sodium hydroxide is used to treat bauxite, which contains alumina, and aluminum metal exists in alumina. Aluminum is the second most commonly used metal in the world. Sodium hydroxide is also used to produce zinc alloys and zinc ingots.

Detergent

Sodium hydroxide has always been used for traditional household purposes, and to this day, soap, soap, and other types of washing products still account for about 15% of the demand for caustic soda.

Soap: The production of soap is an ancient and widespread use of caustic soda, which is used to neutralize fatty acids during the soap making process

Detergent: Sodium hydroxide is used to produce various detergents, and even today's laundry detergent is made from a large amount of caustic soda, which is used to neutralize excess fuming sulfuric acid after sulfurization reaction.